PostCSS Font-Variant 
PostCSS Font-Variant lets you use font-variant in CSS, following the
CSS Fonts specification.
Installation
$ npm install postcss-font-variant
Usage
// dependencies
var postcss = require("postcss")
var fontVariant = require("postcss-font-variant")
// css to be processed
var css = fs.readFileSync("input.css", "utf8")
// process css using postcss-font-variant
var out = postcss()
.use(fontVariant())
.process(css)
.css
Using this input.css:
h2 {
font-variant-caps: small-caps;
}
table {
font-variant-numeric: lining-nums;
}
you will get:
h2 {
font-feature-settings: "smcp";
font-variant-caps: small-caps;
}
table {
font-feature-settings: "lnum";
font-variant-numeric: lining-nums;
}
Checkout tests for more examples.
Contributing
Work on a branch, install dev-dependencies, respect coding style & run tests before submitting a bug fix or a feature.
$ git clone https://github.com/postcss/postcss-font-variant.git
$ git checkout -b patch-1
$ npm install
$ npm test